Earth Walk (OES)

You touch a creature. Until the spell ends, the target gains a burrowing speed equal to its walking speed, and difficult terrain made of earth or stone doesn't cost it extra movement. The creature can burrow through unworked earth and stone, and it doesn't disturb the material it moves through while burrowing. If the target is burrowed when the spell ends, it is immediately shunted to the nearest unoccupied space it can occupy, and it takes bludgeoning damage equal to twice the number of feet it travels to reach that space.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, you can target one additional creature for each slot level above 5th.